Controller for digital audio player



FIG. 1 is a perspective view of the front, top and right side of a controller for digital audio player showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown are included for the purpose of illustrating the unclaimed portions of the article and form no part of the claim. 

The ornamental design for a controller for digital audio player, as shown and described. 